The objective of this research is to know the forms of cyberbullying on the teenagers of Senior High School in Surakarta. This research uses a qualitative approach of phenomenology. The question in this study is what are the forms of cyberbullying in high school adolescents in Surakarta. Population in this study amounted to 150 students, there are 6 informant of the students which are 3 females and 3 males, research informant are obtained on the basis of the open questionnaire. The informant in this research was chosen by using proportional purposive random sampling, the determination of informant research based on the characteristics of the informants are teenagers aged 15-18 years, high school students and adolescents who use the internet for 4-5 hours a day. The technique of collecting data that is used in this research is an interview. Data analysis using interactive analysis techniques. The most forms of the cyberbullying that was done by teenagers of Senior High School in Surakarta were outing and trickery, impersonation, cyberstalking, exclusion, flaming, denigration and harrasement. In this study also determined the forms of cyberbullying used by men and women almost no difference, namely outing and trickery, in cyberbullying women with more impersonation forms used than in men.
Keywords: The froms of cyberbullying, teenager